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Excellent-Results-From-Early-Metallurgical-Test-Work-on-Yangibana-Samples

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EXCELLENT RESULTS FROM EARLY METALLURGICAL
TEST WORK ON YANGIBANA SAMPLES
Hastings Rare Metals Limited
ABN 43 122 911 399
ASX Code: HAS
Level 25, 31 Market Street
Sydney NSW 2000
PO Box Q128 Queen Victoria Building
NSW 1225 Australia
Telephone: +61 2 8268 8689
Facsimile: +61 2 8268 8699
[email protected]
Board and Management
Charles Lew (Chairman)
Anthony Ho (Non Exec Director)
Malcolm Mason (Non Exec Director)
www.hastingsraremetals.com
HIGHLIGHTS
• Monazite identified as the main rare earths-bearing
mineral at Yangibana
• Monazite known to be amenable to commercial
processing
• More than 80% of the monazite is liberated at grind size
of 80% passing 75 microns
• Early beneficiation tests using flotation achieve
significant 85% recovery of rare earths into 25% of
original mass with a 3.5 times increase in rare earths
grade
• Results indicate that a relatively low cost and significant
uplift of rare earths grade can be achieved early in the
processing route
• This indicates that a relatively small hydrometallurgical
plant will be required
• Additional beneficiation routes are also being tested
• Hydrometallurgical tests to commence
INTRODUCTION
Hastings Rare Metals Limited (ASX:HAS) is pleased to
announce that outstanding results have been received
from preliminary mineralogical characterisation test work
completed on two composited samples from the JORC
resources at Yangibana North.
The main rare earths-bearing mineral has been confirmed
to be monazite, a mineral with a long history of successful
beneficiation and extraction as a source of rare earth
elements at commercial scales. Mineralogical studies
have indicated that the Yangibana monazite is well
liberated at a relatively coarse grind size of 75 microns.
Beneficiation test work has commenced with recent tests
achieving greater than 85% recovery of the total rare
earths oxides (TREO) to a higher grade concentrate of less
Address Suite 2508, Level 25, 31Market St, Sydney NSW 2000 Postal Address PO Box Q128 Queen Victoria Building NSW 1230
Telephone 02 8268 8689 Fax 02 8268 8699 Email [email protected] Website www.hastingsraremetals.com
ABN 43 122 911 399
than 25% of the initial mass. TREO grade increase to the concentrate has exceeded 3.5
times. Results are very encouraging. Further optimisation tests are under way with the
aim of improving the recovered grades and recovery rate.
Testing of alternative beneficiation techniques (using magnetics and gravity methods)
will also commence shortly to determine which method or combination of methods
provides the best results.
Preliminary test work will also commence to assess the amenability of the mineralisation
to leaching by various acids. Such leaching will be used on the beneficiated
intermediate mineralisation (concentrate) in the processing route to extract the rare
earths oxides.
The Company expects the final beneficiation results to significantly reduce the capital
expenditure (capex) and operating expenditure (opex) of the Yangibana Project. The
reduction in both capex and opex would be driven by the beneficiation process as it
removes a significant portion of waste material. The reduced tonnage of upgraded
mineral bearing mass (concentrate) would require a small hydrometallurgical plant to be
operated.
Test Work Results
Test work has been undertaken on two composite samples of reverse circulation (RC)
chips from the Company’s April drilling programme at Yangibana North. They were
selected to represent relatively shallow (SHC) and relatively deep (DHC) mineralisation.
Mineral Liberation Analysis
High resolution Mineral Liberation Analysis (MLA) was carried out at ALS Laboratories in
Brisbane under the supervision of independent consultant Dr Kwan Wong. In both
samples the major rare earths-bearing mineral was identified as monazite. A minor
amount of rare earths-bearing bastnaesite was also identified. Mineral Abundances are
shown in Table 1.
The MLA results indicate a high degree of liberation of the monazite, with greater than
80% of the monazite in the samples liberated at the selected grind size of 80% passing 75
microns.
Where the rare earths minerals occur as binary or ternary composites they are mostly
associated with iron hydroxides and iron oxides (Figure 1).
Address Suite 2508, Level 25, 31Market St, Sydney NSW 2000 Postal Address PO Box Q128 Queen Victoria Building NSW 1230
Telephone 02 8268 8689 Fax 02 8268 8699 Email [email protected] Website www.hastingsraremetals.com
ABN 43 122 911 399
Mineral
Bastnaesite
Brockite
Monazite
Rhabdophane
Synchesite
Sulphides
Iron Oxides/Hydroxides
Manganese Oxides
Other Oxides
Carbonates
Phyllosilicates
Silicates
Other
TOTAL
SHC (%)
0.14
0.01
2.25
0.03
0.00
0.06
35.24
3.65
0.16
1.57
7.73
46.68
2.46
100
DHC (%)
0.03
0.00
2.05
0.00
0.01
0.04
40.28
0.23
0.07
13.31
6.25
34.76
2.96
100
Table 1: Mineral Abundances for Two Yangibana North Samples
Figure 1 – Mineral Liberation data for Monazite
Beneficiation Test Work - Flotation
Initial beneficiation test work has commenced on the two Yangibana North samples with
a number of flotation tests completed by Dr Wong. To date eight tests have been
completed with tests 5-7 achieving greater than 85% recovery of the total rare earths
oxides (TREO) to a higher grade concentrate of less than 25% of the initial mass (Table 2).
TREO grade increase to the concentrate exceeded 3.5 times.
Address Suite 2508, Level 25, 31Market St, Sydney NSW 2000 Postal Address PO Box Q128 Queen Victoria Building NSW 1230
Telephone 02 8268 8689 Fax 02 8268 8699 Email [email protected] Website www.hastingsraremetals.com
ABN 43 122 911 399
Test Number
Sample
5
6
7
8
DHC
SHC
DHC
SHC
Concentrate Calculated
Mass
Grade
Upgrade
Recovery
(%TREO)
(%)
4.8
3.6
25.4
7.9
4.9
19.0
4.8
3.6
21.8
3.3
2.0
44.6
Table 2 – Summary of Initial Flotation Results
Recovery
(% of TREO)
85
96
86.2
99.1
These results suggest that a very significant upgrade can be achieved by relatively low
cost flotation techniques. Subject to further tests when these results are translated to an
operational scale then the required capacity and capital and operating costs of the
subsequent processing section, the hydrometallurgical plant, can be significantly
reduced.
This will enhance the economic potential of the project.
Further optimisation test work is under way.
Additional Beneficiation Test Work
Additional beneficiation routes, including magnetic and gravity techniques, are to be
tested to ensure the optimum route is determined to upgrade the mineralisation. Two
samples from within the recently-announced Bald Hills South resource are currently being
prepared for test work, and these will run in parallel with the ongoing programme on
samples from the Yangibana North prospect.
Hydrometallurgical Test Work
Initial hydrometallurgical test work will also be undertaken shortly by Nagrom in Perth.
* TREO is the sum of the oxides of the heavy rare earth elements (HREO) and the light rare earth
elements (LREO).
HREO is the sum of the oxides of the heavy rare earth elements europium (Eu), gadolinium (Gd),
terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu),
and yttrium (Y).
CREO is the sum of the oxides of neodymium (Nd), europium (Eu), terbium (Tb), dysprosium (Dy),
and yttrium (Y) that were classified by the US Department of Energy in 2011 to be in critical short
supply in the foreseeable future.
LREO is the sum of the oxides of the light rare earth elements lanthanum (La), cerium (Ce),
praseodymium (Pr), neodymium (Nd), and samarium (Sm).
For further information please contact:
Andy Border, General Manager Exploration +61 2 9078 7674
Guy Robertson, Company Secretary +61 2 9078 7674
Address Suite 2508, Level 25, 31Market St, Sydney NSW 2000 Postal Address PO Box Q128 Queen Victoria Building NSW 1230
Telephone 02 8268 8689 Fax 02 8268 8699 Email [email protected] Website www.hastingsraremetals.com
ABN 43 122 911 399
About Hastings Rare Metals
• Hastings Rare Metals is a leading Australian rare earths company, with two JORC
compliant rare earths projects in Western Australia.
• The Yangibana Project hosts JORC Indicated and Inferred Resources totalling
6.79 million tonnes at 1.52% TREO, including 0.35% Nd2O3 (comprising 3.96 million
tonnes at 1.59% TREO Indicated Resources and 2.83 million tonnes at 1.43% TREO
in Inferred Resources).
• The Brockmans (previously known as the Hastings) deposit contains JORC
Indicated and Inferred Resources totalling 36.2 million tonnes (comprising
27.1mt Indicated Resources and 9.1mt Inferred Resources) at 0.21% TREO,
including 0.18% HREO, plus 0.89% ZrO₂ and 0.35% Nb₂O₅.
• Rare earths are critical to a wide variety of current and new technologies,
including smart phones, hybrid cars, wind turbines and energy efficient light
bulbs.
• The Company aims to capitalise on the strong demand for critical rare earths
created by expanding new technologies. It has recently completed a Scoping
Study of the Yangibana Project to confirm the economic viability of the Project.
Competent Person’s Statement
The information in this report that relates to Resources is based on information
compiled by Simon Coxhell. Simon Coxhell is a consultant to the Company and a
member of the Australasian Institute of Mining and Metallurgy. The information in this
report that relates to Exploration Results is based on information compiled by Andy
Border, an employee of the Company and a member of the Australasian Institute of
Mining and Metallurgy. The information in this report that relates to metallurgical
results is based on information compiled by Narelle Marriott, a consultant to the
Company and a member of the Australasian Institute of Mining and Metallurgy.
Each has sufficient experience relevant to the styles of mineralisation and types of
deposits which are covered in this report and to the activity which they are
undertaking to qualify as a Competent Person as defined in the 2012 edition of the
‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves’ (“JORC Code”). Each consents to the inclusion in this presentation of the
matters based on his information in the form and context in which it appears.
Address Suite 2508, Level 25, 31Market St, Sydney NSW 2000 Postal Address PO Box Q128 Queen Victoria Building NSW 1230
Telephone 02 8268 8689 Fax 02 8268 8699 Email [email protected] Website www.hastingsraremetals.com
ABN 43 122 911 399
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